# Calculating a template matching similarity score?

Hello everyone,

I am trying the simple template matching function matchTemplate.

However I'm still having a hard time understanding how to extract the "overall" matching coefficient score for the instance. I know that depending on the method used, the coefficient varies 0-1 or -1 to 1 and each pixel is having a similarity index in result matric.

But then how do we get an overall similarity score for that matching? I'd really really appreciate your help with this. As I'm stuck in this process and have no one else to ask for help.

Thanks a ton!

Could you precise the ''overal similarity score'' you're expected? The sum of score on the image? the sum for your best patch?

For example whenever a match is found, I'd like to know the confidence score for that match. I mean how similar the algorithm believes our template is to the original image. I believe minMaxLoc does that by analyzing the similarities. But how can I check what's the minimum or maximum score? Di I have to go through all values in the matrix? J'espere c'est clair. It's night here now. Will check your response tomorrow morning. Merci d'avance mec!